Refuse-destructor.



H. N. LEA$K.

REFUSE DESTRUOTOR.

APPLICATION FILED MAY 12, 1910.

Patented Sept. 30, 1913.

2 SHEETS-SHEET l.

WITNESSES.

COLUMBIA PLANOGRAPII c( H. N. LBASK.

REFUSE DESTRUOTOR.

APPLIGATION FILED MAY 12, 1 91o.

1,074,508. I Patented Sept. 30, 1913.

2 SHEETSSHEET 2.

INVENTOR COLUMBIA PLANDGRAPH CO.,WASHINGTON. h c.

HENRY NORMAN LEASK, OF EG-REMONT, ENGLAND.

REFUSE-DESTRUCTOR.

Specification of Letters Patent.

Patented Sept. 30, 1913.

Application filed May 12, 1910. Serial No. 560,914.

To all whom it may concern Be it known that I, HENRY NORMAN Lnasx, a British subject, residing at Egremont, county of Chester, England, haveinvented certain new and useful Improvements in Rcfuse-Destructors, of which the following is a specification.

This invention relates to improvements in the furnaces of refuse destructors and is designed to provide an improved construction of furnace which can be easily and expeditiously cleaned.

It consists essentially in constructing the furnace with a door the whole width of the furnace and providing the furnace with a bar or bars extending the length thereof, the inner end or ends of which projects or project upward and is or are provided with arms so that when a charge is burned out the door can be opened and the whole of the clinker in the grate can be expeditiously removed by drawing the bar forward in any suitable manner, the arms thereon forcing the clinker out through the door of the grate in a mass, the grate being preferably made somewhat narrower at the back than at the front to facilitate such withdrawal.

The invention will be described with reference to the accompanying drawings.

Figure 1 is a sectional view through a refuse destructor furnace of ordinary type provided with the invention. Fig. 2 is a sectional side view of another form of grate provided with the invention. Fig. 3 is a transverse section of same.

In general one or more longitudinal bar supporting means, slotted, grooved, recessed or of box formation as at a are formed in the bottom of the grate inwhich fit one or more bars D which extend the full length of the furnace A and are turned up at the inner end and provided with a suitable head. The longitudinal grooves, recesses or boxes a constitute supporting means below the grate to movably receive bar means partially extending into the supporting means and also partially located on the upper side of the grate, as will be hereinafter specified. Air is preferably admitted to the fire around the bar in such a way that the latter is kept cool and prevented from burning.

The door of the furnace is made the full width of the front ofthe grate, and after a charge has been burned therein the bar or bars D held by the grooves, recesses or boxes a constituting the supporting means for the said bar or bars and which is or are drawn forward in anysuitable manner, as for instance by a small winch, and by means of the head attached thereto, the complete charge of clinker or the like in the grate is forced out through the door.

As in my companion application Serial No. 560,913, filed of even date herewith, the jacket 13 incloses the grate and the lower portion 6 of said acket may be hinged as at a and a lever and link arrangement 0, Z and Z is provided for operating the hinged portions Z) from the front of the furnace to open the said hinged portions to allow ashes to drop into the ash pit.

The invention is shown as applied to a refuse destructor grate of ordinary construction. The draw bars D are arranged in longitudinal channels or boxes a into which air can be passed in any suitable manner and from which it escapes into the fire around the bars D to keep them cool and assist combustion.

The bars D preferably rest on rollers m to ease and facilitate their longitudinal motion in the furnace. The boxes a may be omitted if desired and air allowed to pass up around the bars D directly from the ashpit, but generally the boxes a are preferable.

The invention is specially applicable and efiicient however where used with grates of trough section.

For the purpose of removing the head (Z of the draw bar D from the fierceness of the fire to prevent it being burned a recess a may be made in the back of the furnace to receive'the head 03 of the draw bar air being blown or not into the fire around it to keep it cool.

The operation of the bar is improved by providing means for slightly jigging it to loosen or release it and the clinker upon it from its surroundings when it is to be withdrawn.

Any suitable means maybe employed for this purpose and the bar may be jigged at the front, back or middle or at two or all of these positions.

Any suitable means for drawing or pushing out the drag bar or the head (Z may be employed such as a winch or a hydraulic or other ram G as shown in Fig. 4.

Where a number of grates are arranged side by side a traveling winch arranged op-- posite the furnaces may be adapted to operate all the drag bars D.

After a grate has been cleaned or discharged by drawing out the drag bar, a new bar may be inserted.

I In my copending application Serial Numher 560,913 a trough-like grate surrounded by a jacket having doors to form air passages relatively to the gratetogether with openings in the grate sides for the admission of air above the bottom of the grate is disclosed, and the same structure is embodied in the present application. In said application Serial Number 560,913 claims are drawn to cover the grate structure and jacket with the doors, but the particular arrangement of the lower reduced extremity of the grate having an openingextending longitudinally thereof and a supporting means applied under the grate is not claimed in the said application.

WVhat I claim as my invention and desire to protect by Letters Patent i's:-

1. In a refuse destructor furnace, the combination of a grate having bar supporting means below the same and extending longitudinally thereof and provided with an open top portion in line with an open portion of the grate, and bar means movably disposed in said supporting means and partially extending into the supporting means and also partially located on the upper portion of the grate, the bar means having an angular projection at its rear extremity above the plane of the grate.

2. The combination in a furnace, of a grate of trough-like form having a lower reduced extremity with a lower reduced bottom with an opening extending longitudinally thereof, a supporting means applied under and against the grate and with which the said opening in the grate has communication, and a bar extending full length of the grate and movable in the slot and also partially bearing on the upper portion of the grate and also within the supporting means, the bar having a rear upwardly projecting angular extremity to bodily remove the burned out charge by drawing the same longitudinally of the grate.

3. The combination in a furnace, of a grate of trough-like form having a lower reduced bottom with an opening extending therethrough longitudinally thereof and the Copies of this patent may be obtained for full length of the bottom, av supporting means applied to the under side of the grate and with which the said opening has com munication, a bar slidably disposed in said opening and extending full length of the grate and provided with devices projecting across the grate to bodily remove a burned out charge,rand means in the supporting means on which the bar is movably support ed to facilitate actuation of the bar.

4. The combination of a furnace having a trough-shaped grate with a lower reduced bottom and an opening extending full length of the grate, the grate being provided with air ingress means at its lower portion for cooling the same, a supporting means extending along the bottom of the grate and with which the said opening come municates, and a bar movably mounted in the lower reduced portion ofthe bottom in the opening in the latter and-extending full i length of the grate, the bar having a portion thereof bearing on the grate and the remaining portion projecting into the supporting means.

r 5. The combination in a furnace, of a trough-shaped grate having a lower reduced bottom with an opening extending longitu:

dinally therethrough and full length thereof, the furnace also having an openingextending the full width of the grate through which the burned out charge is adapted to be delivered at one operation, a supporting means extending along the bottom of the grate and with which the said opening communicates, and a bar mounted in the opening in the reduced bottom portion of the grate and extending full length of the latter and movable longitudinally relatively to the grate, the bar being provided with means for drawing a burned out. charge through the opening in the furnace extending the full width of the grate, the barpartially resting on the grate and having a portion also extending into "the supporting means, the grate being provided with air ingress openings adjacent to the bar for coolingthe latter.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

' HENRY NORMAN LEASK. Witnesses:

J. OWDEN OBRmN,

HARRY BARNFATHER.

five cents each, by addressing the Commissioner of Patents, Washington, .D. G. 

